Case study

The World Ends With You: reconstructing the Nintendo DS codebase

The World Ends With You reconstructs the Nintendo DS game's code for its US and Japanese releases. The project builds from user-supplied ROMs and documents asset formats including PACK archives, graphics, text, fonts and tables.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 35
Last commit: 2026-10-30
Language: C
License (GitHub): CC0-1.0

GitHub data as of 2026-11-10

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: A legitimately obtained US or Japanese .nds ROM is required for its corresponding build.
Prerequisites: Windows or Linux, Python 3.11+, GCC 9+ and Ninja are required.
Prerequisites: A byte-matching build also requires an ARM7 BIOS copy.
License: CC0-1.0 license applies to repository code.

Cite

BibTeX

@misc{the-world-ends-with-you-ds-case,
  title = {{The World Ends With You: reconstructing the Nintendo DS codebase}},
  howpublished = {\url{https://github.com/Yotona/twewy}},
  url = {https://github.com/Yotona/twewy},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/the-world-ends-with-you-ds-case/}}
}

Plain text

The World Ends With You: reconstructing the Nintendo DS codebase. https://github.com/Yotona/twewy (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/the-world-ends-with-you-ds-case/

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About this entry

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Primary sources

README.md GitHub · Yotona/twewy · Revision 3f916f1
docs/asset-format-analysis.md GitHub · Yotona/twewy · Revision 3f916f1